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| NOUN |
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| /ˈɪmpʌls/ |
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| 1 | C/U a sudden strong feeling that you must do something 冲动；一时的念头；突然的欲望 |
| an impulse to do sth Jenny felt a sudden impulse to play some music. 珍妮突然觉得想放点音乐。 |
| control/resist an impulse He struggled to resist the impulse to laugh. 他努力抑制住想笑的冲动。 |
| on (an) impulse (=because you suddenly feel that you want to) He saw them get into the car and on an impulse he followed them. 凭一时冲动；一时冲动之下 |
| act on impulse Acting on impulse, he knocked on her door. 凭着一时冲动，他敲响了她的门。 |
| | 1a | one of the strong basic feelings that make people do things 欲望；冲动 | | the sexual/creative impulse 性/创作冲动 | |
| | 1b | an impulse buy is something that you buy because you see it and want it 心血来潮的；一时冲动的 | |
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| 2 | C science an electrical signal , for example one that is passed from a nerve to a muscle 脉冲；神经冲动 |
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